Home U+1F100 to U+1F1FF Enclosed Alphanumeric Supplement
Glyph for U+1F171
Source: Noto Emoji

U+1F171 Negative Squared Latin Capital Letter B

U+1F171 was added to Unicode in version 6.0 (2010). It belongs to the block U+1F100 to U+1F1FF Enclosed Alphanumeric Supplement in the U+10000 to U+1FFFF Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as blood type B.

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+1F171 behaves as Ambiguous (Alphabetic or Ideographic) regarding line breaks. It has type Upper for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

The CLDR project labels this character β€œB button (blood type)” for use in screen reading software. It assigns additional tags, e.g. for search in emoji pickers: B, B button (blood type), blood type.

This character is designated as an emoji. It will be rendered as monochrome character on conforming platforms. To enable colorful emoji display, you can combine it with Glyph for U+FE0F Variation Selector-16: πŸ…±οΈ See the Emojipedia for more details on this character’s emoji properties.

The Wikipedia has the following information about this codepoint:

The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes. For human blood transfusions, it is the most important of the 43 different blood type (or group) classification systems currently recognized by the International Society of Blood Transfusions (ISBT) as of June 2021. A mismatch (very rare in modern medicine) in this, or any other serotype, can cause a potentially fatal adverse reaction after a transfusion, or an unwanted immune response to an organ transplant. The associated anti-A and anti-B antibodies are usually IgM antibodies, produced in the first years of life by sensitization to environmental substances such as food, bacteria, and viruses.

The ABO blood types were discovered by Karl Landsteiner in 1901; he received the Nobel Prize in Physiology or Medicine in 1930 for this discovery. ABO blood types are also present in other primates such as apes and Old World monkeys.

Representations

System Representation
NΒΊ 127345
UTF-8 F0 9F 85 B1
UTF-16 D8 3C DD 71
UTF-32 00 01 F1 71
URL-Quoted %F0%9F%85%B1
HTML-Escape 🅱
Wrong windows-1252 Mojibake Γ°ΒŸΒ…Β±
alias blood type B

Elsewhere

Complete Record

Property Value
Age 6.0 (2010)
Unicode Name NEGATIVE SQUARED LATIN CAPITAL LETTER B
Unicode 1 Name β€”
Block Enclosed Alphanumeric Supplement
General Category Other Symbol
Script Common
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Lowercase ✘
Simple Lowercase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Lowercase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Uppercase βœ”
Simple Uppercase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Uppercase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Simple Titlecase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Titlecase Mapping Glyph for U+1F171 Negative Squared Latin Capital Letter B
Case Folding Glyph for U+1F171 Negative Squared Latin Capital Letter B
ASCII Hex Digit ✘
Alphabetic βœ”
Bidi Control ✘
Bidi Mirrored ✘
Composition Exclusion ✘
Case Ignorable ✘
Changes When Casefolded ✘
Changes When Casemapped ✘
Changes When NFKC Casefolded ✘
Changes When Lowercased ✘
Changes When Titlecased ✘
Changes When Uppercased ✘
Cased βœ”
Full Composition Exclusion ✘
Default Ignorable Code Point ✘
Dash ✘
Deprecated ✘
Diacritic ✘
Emoji Modifier Base ✘
Emoji Component ✘
Emoji Modifier ✘
Emoji Presentation ✘
Emoji βœ”
Extender ✘
Extended Pictographic βœ”
FC NFKC Closure Glyph for U+1F171 Negative Squared Latin Capital Letter B
Grapheme Cluster Break Any
Grapheme Base βœ”
Grapheme Extend ✘
Grapheme Link ✘
Hex Digit ✘
Hyphen ✘
ID Continue ✘
ID Start ✘
IDS Binary Operator ✘
IDS Trinary Operator and ✘
Ideographic ✘
Indic Mantra Category β€”
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name β€”
Join Control ✘
Logical Order Exception ✘
Math ✘
Noncharacter Code Point ✘
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+1F171 Negative Squared Latin Capital Letter B
NFKC Quick Check Yes
NFKD Quick Check Yes
Other Alphabetic βœ”
Other Default Ignorable Code Point ✘
Other Grapheme Extend ✘
Other ID Continue ✘
Other ID Start ✘
Other Lowercase ✘
Other Math ✘
Other Uppercase βœ”
Prepended Concatenation Mark ✘
Pattern Syntax ✘
Pattern White Space ✘
Quotation Mark ✘
Regional Indicator ✘
Radical ✘
Sentence Break Upper
Soft Dotted ✘
Sentence Terminal ✘
Terminal Punctuation ✘
Unified Ideograph ✘
Variation Selector ✘
Word Break Alphabetic Letter
White Space ✘
XID Continue ✘
XID Start ✘
Expands On NFC ✘
Expands On NFD ✘
Expands On NFKC ✘
Expands On NFKD ✘
Bidi Paired Bracket Glyph for U+1F171 Negative Squared Latin Capital Letter B
Bidi Paired Bracket Type None
East Asian Width Ambiguous
Hangul Syllable Type Not Applicable
ISO 10646 Comment β€”
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Ambiguous (Alphabetic or Ideographic)
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+1F171 Negative Squared Latin Capital Letter B
Script Extension
Vertical Orientation U